Improved gage for metal-planing



UNITED STATES PATENT OFFICE.

E. E. JENNINCs, oE NEW HAVEN, CONNECTICUT.

IMPROVED GGE FOR METAL-PLANING.

Speeication forming part of Letters Patent No. 39,404, dated August 4,V1863.

To a/ZZ whom it' may concern:

Be it known that I, HQE. JENNINGS, of

Fig. 2, a plan or top view of the same; Fig.

3, a detached side view of a piece of work to be planed and adjusted bymy invention.

Similar letters of reference indicate correponding partsin the several.gures This invention relates to an improvement in gages, such as areemployed on metalplaniig machines for adjusting workhorizontally orinclined on their beds, as may be required.

The object of the invention is to obtain a gage of the class speciedwhich may be adjusted or manipulated with far greater nicety Athan `vtheordinary ones in use, and with much greater facility, so as to economizeiu time in adjusting the"work on the bed.

To this end the invention consists in the application of a spring andset-screw to the:

index-arm ofthe gage, as hereinafter set i'orth.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents a base, in which a flat vertical slotted bar, B, ispermanently fitted, the slot a.. extending nearly the wholelength orheight of the'bar B, and C represents 'an index-arm, which is also offlat form, one end terminating in a hook or curve, b, and the other endin a poi-nt, c, as shown clearly in Fig. l. This index-armhas also alongitudinal slot, d, made in it, through which and the slot a of thebar Y B a set-screw, D, passes, said set-screw also passing through abox, E, in which the indexarm C is titted and allowed to slide freely.In this box E a spring, F, is secured, which presses against one sideoftheindexarm C, and through the opposite side of the box E a set--screw, G, passes, which bears against theindex-arm, as shown clearly inFig. l.

From the above description it will be seen that the index-arm C mayberaised and lowered on the vertical bar B, and secured at any desiredpoint by. means of the set-screw D; and, besides t'his'adjustment oftheindex-arm, it will be seen that the ends of the latter may be raised andlowered byv turning the setscrew Gr, which presses against theindex-army and causes the spring F to yield. This. second adjustment ofthe index-arm admits of the endsot' the latter being moved very. nicely,and obviates the necessity of the' repeated trials which have to be madewhen the sliding of theindex-ar'm on the bar B is alone depended uponfor the adjustment of the former.

In Fig. 1 a piece of work is shown in red' outline, with the curvedend bof the indexarm'over it. The implement is moved by hand arou-nd the bedof the planingmachine, and the end b is the index by which the Work isadjusted ina horizontal position. Y

In Fig. 3 a piece of work isl shown which is to have its upper surfaceplaned to form an inclined surface. The Work has a line, ax, scratchedat each side of it to serve as guides for the adjustment of the Work. Inthis adjustment the point c of the index-arm C is used, and the work iswedged up until the point c will tally or coincide with the lines at-each side of the work, the gage being shoved along the bed of theplaning-machine at each side of the work. By this means the work'isadjusted in an inclined position, and the upper surface of the workwill, 'of course, be planed ott' level, so as to have an inclinedsurface when the lower side of the Work rests on a level bed.

I do not claim theiudexarm and upright bar B, for they constitute thegage in com# mon use but,

Having thusfully described my invention, what I do claim-as new, anddesire to secure by Letters Patent, is-

The spring F and set-screw G, in combina tion with the box E,index-arm'C, and upright bar B, all arranged substantially as shown, toform an improved implement or device for the purpose specified.

H. H. JENNINGS. Witnesses RUFUs S. PICKETT, HENRY J. HUBBARD.

